The minimal normal ๐-complete filter on ๐_{๐
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The minimal normal ๐-complete filter on ๐_{๐
}๐
We introduce the closed (resp. strongly closed) <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="mu"> <mml:semantics> <mml:mi>ฮผ</mml:mi> <mml:annotation encoding="application/x-tex">\mu</mml:annotation> </mml:semantics> </mml:math> </inline-formula>-unbounded filter <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper C upper F Subscript kappa lamda Superscript mu"> <mml:semantics> <mml:mrow> <mml:mi>C</mml:mi> <mml:msubsup> <mml:mi>F</mml:mi> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>ฮบ</mml:mi> <mml:mi>ฮป</mml:mi> </mml:mrow> <mml:mi>ฮผ</mml:mi> </mml:msubsup> </mml:mrow> <mml:annotation encoding="application/x-tex">CF_{\kappa \lambda }^\mu</mml:annotation> โฆ